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In a reversible reaction at equilibrium, if the temperature is increased, what w

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Question: In a reversible reaction at equilibrium, if the temperature is increased, what will happen to the equilibrium position if the reaction is exothermic? (2023)

Options:

  1. Shift to the right
  2. Shift to the left
  3. No change
  4. Increase the rate of reaction

Correct Answer: Shift to the left

Exam Year: 2023

Solution: 

For an exothermic reaction, increasing the temperature shifts the equilibrium position to the left, favoring the reactants, as the system tries to absorb the added heat.

In a reversible reaction at equilibrium, if the temperature is increased, what w

Practice Questions

Q1
In a reversible reaction at equilibrium, if the temperature is increased, what will happen to the equilibrium position if the reaction is exothermic? (2023)
  1. Shift to the right
  2. Shift to the left
  3. No change
  4. Increase the rate of reaction

Questions & Step-by-Step Solutions

In a reversible reaction at equilibrium, if the temperature is increased, what will happen to the equilibrium position if the reaction is exothermic? (2023)
  • Step 1: Understand what an exothermic reaction is. In an exothermic reaction, heat is released when the reaction occurs.
  • Step 2: Know that equilibrium is a state where the forward and reverse reactions occur at the same rate.
  • Step 3: Recognize that increasing the temperature adds heat to the system.
  • Step 4: Remember Le Chatelier's Principle, which states that if a system at equilibrium is disturbed, it will shift to counteract the disturbance.
  • Step 5: Since the reaction is exothermic, adding heat will cause the equilibrium to shift in the direction that absorbs heat, which is towards the reactants.
  • Step 6: Conclude that increasing the temperature will shift the equilibrium position to the left, favoring the reactants.
  • Le Chatelier's Principle – This principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.
  • Exothermic Reactions – In exothermic reactions, heat is released, and increasing temperature can shift the equilibrium towards the reactants.
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